The present invention relates to assays for detection of nicotine metabolites, in particular cotinine, in fluid samples and uses of these assays in quantification of smoking habits. The assays comprise contacting a body fluid sample with a cyanogen halide and a pyrazolone compound and detecting a change in light absorbance of the pyrazolone compound which is associated with the presence of nicotine metabolites. Also provided are assay kits including a cyanogen halide or cyanogen halide-precursor(s) and a pyrazolone compound.
本发明涉及检测液体样品中
尼古丁代谢物,尤其是茄碱的检测方法以及这些检测方法在量化吸烟习惯方面的应用。该检测方法包括将体液样品与
氰卤和
吡唑酮化合物接触,并检测与
尼古丁代谢物存在相关的
吡唑酮化合物的光吸收变化。此外,还提供了包括
氰卤或
氰卤前体和
吡唑酮化合物的检测试剂盒。